Re: Need to update VSAM through JCL

What you want cannot be done, period. All JCL does is execute programs and allocate files. If you had said you wanted to use a program (such as SORT or writing COBOL code) to do so, then what you want to do would be possible.

Furthermore, you did not provide any information about how your input is changed to create your output -- it could have been changed by date, or because it is the second record, or because of the key value, or whatever. You did not provide any such information, so any answers you get can only be guesses.